Magnetic levitation is the effect of levitating an element by means of a phenomenon that is based on the principle of repulsion that has two poles of equal magnetic charge, which with due control causes a body to remain suspended in the air.
This principle also applies to what is called the Meissner-Ochsenfeld effect, an inherent property of superconductors. Superconductivity is a characteristic of some compounds, which, below a certain critical temperature, do not resist the passage of current; that is, they are materials that can achieve zero resistance.
This technology has been used in different elements such as cell phones that have a sliding panel system, however, where it stands out is in the construction of high-speed trains, which slide on superconductors and provides greater performance by requiring only an initial impulse and circulate without friction with the surface. With German, Japanese and French technology these trains can reach a maximum speed of 650 km/h.
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From @reesteemiter